Winch crank



FIG. 1 is a front perspective view of the winch crank design;

FIG. 2 is a front elevation view of the winch crank design, with the rear side being symmetrical thereto;

FIG. 3 is a left side elevation view of the winch crank design;

FIG. 4 is a right side elevation view of the winch crank design;

FIG. 5 is a top plan view of the winch crank design; and,

FIG. 6 is a bottom plan view of the winch crank design.

The broken lines form no part of the claimed design. 

The ornamental design for a winch crank, as shown and described. 